Elevator safety-lock.



B. H. MACY.

ELEVATOH SAFETY LOCK.

APPucmourlLzn Mlm. la. |915.

vmma: H. MACY, or SOMERVILLE, MASSACHUSETTS.

ELEVATOR SAFETY-LOCK.

To all whom 'it may concern.'

Be it known that I', BURT I-I.MAcY, a citizen of the UnitedStates, and` resident of Somerville, in the county of Middlesex and State of Massachusetts, have invented ce1'- tain new and useful Improvements 'inElevator Safety-Locks, of which the following is a speciiication. 1

".The present invention relates to a `lock adapted to be used in connection with an elevator of which the operation iscontrolled by a shipper cable, 'to prevent movement of the shipper cable under certain-conditions. The invention consists in a novel construction of such 'lock and inthe combination of such lock with the shipper cable of an i elevator and with mechanism operable by a gate in the elevator' well for opening and closing thel lock. 'In the drawin s I have shown a form of my invention an the association of the same with operating mechanism ina combination which also forms a part of the invention. n

Figure 1' is a plan View of the elevator lock' and of the operating mechanism with which it is associated. 1

Fig. 2is an elevatinof the lock and such mechanism.'

.Figg'Bis a sectional view on a larger scale lof the lock taken on line 3-3 of Fig. 1, look- `ing in the direction of the arrows.

' B1`ig14 is a' horizontal sectional view of the loc The same reference characters indicate the same parts in all the figures. j

I `will first describe the lock and then explain the combination in which it is used as here shown. The exterior of the lock is a casing composed of twoseparable yparts 10 and 12, each of said parts being preferably a single casting and being formed as an oblong box-like structure open at one end, The parts 10 and 12 have lugs 11 and 13, respectively, adjacent' to their open ends which receive attaching screws 14, whereby said parts are connected to form a` substantially continuousV casing inclosing an inner space which is open-throughout the length, width and thickness of the entire casing.

The top and bottom sides of the casing mem-f bers at their contiguous open ends are recessed,such recesses forming together a substantially circular opening 15, surrounded by 1 flaring lips 16, 17 on the respective parts of Y Speeication of Letters Patent.

Patented July a, `191s.

Application led March 18, 1915. Serial No. 15,242.

the casing. 'Ihese lips form guides to the openlng `15.

' The shipper cable 18, by which the operation of the elevator car is controlled, and

knobs or abutments 19, 2O on such cable, are

adapted to pass through the opening 15 in the :casing of the lock and the knobs are guided into such opening when the cable is moved endwise, by the bell-mouthed guide formed by the lips 16, 17 surrounding such opening. The knobs 19 and 20 are separated, as usual, by a space suiiciently wide to admit the jaws of the lock.

In the casing are mounted the locking jaws 21 and 22 which are disposed on respectively opposite sides of the cable 18. Jaw 21 is mounted on a slide 23, which has a tail piece 24, and the jaw 22 is mounted 011 a slide 25 between the jaw 21 andthe tail piece 24. These slides fit between the walls of the casing in such a manner that they are maintained in proper relation to each other, and at the same time are enabled toI slide freely. It will be observed in Fig. 4 that each slide extends across substantially the entire width of the interior of the casing; vA spring 26 is interposed betweenthe tail piece 24 and the slide 25 normally holding'the slides in the position shown in Fig.

4, where the tail piece abuts against the back end of the casing and the slide 25 is pushed away from thatV end ofthe casing to the limit of its movement. In this position of the parts, jaw 21 partly crosses the opening 16 and enters the space 'between the knobs 19 and 20 on the shipper cable, and

slide 23. In other words, a portion 28 of the slide is made narrower than the rest of the slide, and the jaw 22 is provided with two ears 29, which lie on opposite sides of the narrow portion 28, as shown in Fig.,3. I do not limit the invention to this feature however. The slide 25 has a notch 30 and the slot admitting a narrowneck 28 on the ,i

tively, of. a lever which s 'mounted-'in-the easing between theasldelsneesehewn.ng v5 4,'.ands provided withv a'shank 34, which e passes through the top and bottoinivvells'of* the casing and carries an operatnghandle H 355..,3213 will .be apparenti v-,that turning Ltliel handle 35 in .the only dreetonpossble Will'.v swing the operating leveV and 'slftftle jvve f Gesine, fprmfth.'

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@s with the ia'nle 35, 'and is .adapted t@ Slide liber. jew 9.11.-Sdfe's'fheOther! A Y m ed the. .adapted ...gh Thefleekl-ie l1 .9.125 gate' ofthe Well;

'mountedn bearings 43 and44,end'ca,rres a, v

jects into the pathof el lug or pin 47,`sl1own .n

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` nf peep-e021? theloekj .'wbeetheeeble... P9etien-,-that-egim .weien Oresteepi g the cer. T he cable can vnot'.belnooved this. Peeiteeeeleeethelewe0fellf-the-10Ql S` ere Open, end.thefendtnfeeneoletee 1110 When'elzl; efethefgeteeexecleeedf -Theieeb'le .Whether.ztbeleekffnewsfeeetepel 0r Closed peeee theeewsiwhen fl thepart 12 belng merely :L cover to` inclose v130 l the projectingpart ofjaw 21, andthe mechanism; is complete and operative whether the casing member` 12 .is inplace or not. Some forms ,oflock heretofore made` require, in order to be associated with an elevator shippercable, either that the shipper cable be disconnected and threaded through the lock, or thelock be disassembled and reassembled about the cable,ythere being no other ,wayto pass the cable betweehfhe jaws of the lock. With my construction it is merely necessary to remove the casing part 12, draw the jaws apart and slip the. cable between zthem and then replace the cover 12.

When this lock is used in the manner above described the elevator car may also,

' if desired, be equipped with an additional lock of the same construction or of any other construction. The combination in which they present lock is used as above described, is additional to any lock which may be mounted upon the car, and provides an additional safeguard which prevents the car from being Vstarted when any gate is open, even though Vment, and I am therefore able to mount such a lock ateach floor, as already stated.

In definition of the terms used in the claims, the gate or door, previously described, may be considered as generically a guard for the opening to the elevator well,

whatever specific form it may have, whether it be a gate so-called or a door so-called. The parts which have been called knobs 19 and 20 are in function and effect stops, which `may have other forms than those shown,

provided they perform the function of preventing movement of the shipper cable when the lock is in the way of stops.

What I claim and desire to secure by Let-` ters Patent is:

1. In an elevator installation, the combination with a shipper cable and separated stops on said cable, of a lock mounted in a stationary location and having relatively movable separable jaws embracing said cable and adapted to occupy a position between said stops in the path thereof, whereby to prevent movement of the cable into the position for .starting the car, an actuator for said jaws, an endwise movable rod connected to said actuator and having a tappet, and a rock shaft having a plurality of arms one of which is arranged to engage said tappet and the other is arranged to be engaged and moved by an elevator gate.

2. In an elevator installation, the combination with the return stretch of a shipper cable, of locks mounted adjacent to each of thel floors or` stages of said installation, each lock being provided with relatively movable jaws embracing the cable, a pair of separated stops on the ,cable adjacent to each ofthe several locks, the stops of each pair being disposed on opposite sides of said jaws when the cable is inthe neutral position, and the jaws normallyin position to interfere with said` stops, a gate or guard at each stage of the installation, an operating lever engaged with bothjaws and arranged for operation to move the jaws apart, and mechanism through which each gate is adapted to turn the operating lever of the lock at the same stage in the manner which causes the jaws of that lock to be separated, or opened.

3. In an elevator installation, the combination with a lock having separable jaws and an operating lever engaged with said jaws, of an arm connected with said lever, a link joined to said arm and'having an abutment, and a rock shaft having a tappet arranged to bear on said abutment and having an arm adapted to be moved by pressure applied thereto.

4. An elevator lock comprising a casing'- having guideways at opposite sides thereof, slides movable in said guideways each having a jaw element projecting toward the opposite guideway, said jaws passing one another and formed with a space between them adapted to admit an elevator shipper rope, said slides each having on the side toward the other a socket, and a lever pivoted in the casing between said slides having arms entering 4said sockets whereby said lever is operable to move said slides simultaneously in relatively opposite directions and also to transmit movement from one slide to the other.

5. An elevator lock comprising a casing having guideways at opposite sides thereof, slides movable in said guideways each having a jaw element projecting toward the opposite guideway, said jaws passing one another and formed with a space between them adapted to admit an elevator shipper rope, said slides each having on the side toward the other a socket, and a lever pivoted in the casing between said slides having arms entering said sockets whereby said lever is operable to move said slides simultaneously in relatively opposite directions and also to transmit movement from one slide to the other and a spring engaged with said slide so as to press upon one and react against the other in a manner tending to place and retain said slides in the positions where their jaws are nearest to one another.

6. An elevator lock comprising two slides mounted to move in parallel paths and having a space between them, each slide having a jaw extending toward the location in which the other slide moves, and one of said slides having a tail ypiece crossing the line 

